isrstealer | 61ba14e415c7c25cb55814c83b8921907c3d0cb24fe8ebe4e2d79d1d7f9f0ded

General

Target

572b0a1dc3f6452bd60bc4c2271fa972_JaffaCakes118.exe
Size

264KB
MD5

572b0a1dc3f6452bd60bc4c2271fa972
SHA1

f4560af2b524b8a1fd4d6196187ad38d4aa28b39
SHA256

61ba14e415c7c25cb55814c83b8921907c3d0cb24fe8ebe4e2d79d1d7f9f0ded
SHA512

e3c4d319d34a586578155948722c0403c5a42e9a7e32fddd82e3733653ba587bc8df9012eb322bf3946ad83b561a275b5b0686abce543efaa6a94e4a6ef022eb
SSDEEP

6144:PlC7pFKGULN4W420m8nCBozjrSPq0jGJxKZuW:spUNO20m8nCBTd

Score

10^/10

isrstealer spyware stealer trojan

Malware Config

Signatures

ISR Stealer
ISR Stealer is a modified version of Hackhound Stealer written in visual basic.
trojan stealer isrstealer

ISR Stealer payload 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\Server1.exe	family_isrstealer

Executes dropped EXE 2 IoCs

Processes:

Server1.exekeygen.exe

pid process

2832 Server1.exe
2828 keygen.exe
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2832	Server1.exe
2828	keygen.exe

Modifies registry class 3 IoCs

Processes:

Server1.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\MIME\Database	Server1.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\MIME\Database\Charset	Server1.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\MIME\Database\Codepage	Server1.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

Server1.exe

pid process

2832 Server1.exe
2832 Server1.exe
2832 Server1.exe
2832 Server1.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Server1.exe

pid process

2832 Server1.exe

pid	process
2832	Server1.exe
2832	Server1.exe
2832	Server1.exe
2832	Server1.exe

pid	process
2832	Server1.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

572b0a1dc3f6452bd60bc4c2271fa972_JaffaCakes118.exe

description	pid	process	target process
PID 2228 wrote to memory of 2832	2228	572b0a1dc3f6452bd60bc4c2271fa972_JaffaCakes118.exe	Server1.exe
PID 2228 wrote to memory of 2832	2228	572b0a1dc3f6452bd60bc4c2271fa972_JaffaCakes118.exe	Server1.exe
PID 2228 wrote to memory of 2832	2228	572b0a1dc3f6452bd60bc4c2271fa972_JaffaCakes118.exe	Server1.exe
PID 2228 wrote to memory of 2832	2228	572b0a1dc3f6452bd60bc4c2271fa972_JaffaCakes118.exe	Server1.exe
PID 2228 wrote to memory of 2828	2228	572b0a1dc3f6452bd60bc4c2271fa972_JaffaCakes118.exe	keygen.exe
PID 2228 wrote to memory of 2828	2228	572b0a1dc3f6452bd60bc4c2271fa972_JaffaCakes118.exe	keygen.exe
PID 2228 wrote to memory of 2828	2228	572b0a1dc3f6452bd60bc4c2271fa972_JaffaCakes118.exe	keygen.exe

C:\Users\Admin\AppData\Local\Temp\572b0a1dc3f6452bd60bc4c2271fa972_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\572b0a1dc3f6452bd60bc4c2271fa972_JaffaCakes118.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2228
- C:\Users\Admin\AppData\Local\Temp\Server1.exe
  "C:\Users\Admin\AppData\Local\Temp\Server1.exe"
  2⤵
  - Executes dropped EXE
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  PID:2832
- C:\Users\Admin\AppData\Local\Temp\keygen.exe
  "C:\Users\Admin\AppData\Local\Temp\keygen.exe"
  2⤵
  - Executes dropped EXE
  PID:2828

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

2

T1552

Credentials In Files

2

T1552.001

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

2

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\Server1.exe

Filesize
76KB

MD5
96e90f5200f5cf9be677b61f52f6da05

SHA1
d7bc0c3e1126cb055114c90d322536b129960273

SHA256
27f59685b9c46919d50803b107fd86375249417f9e7c75e42bf8242b68c97ed4

SHA512
e010498fc79bee891707e8dbcc69bdbf7e6926b4228549b063ac36650f75f5ff95ba74b628cd1d6cda01665ca09f805da870b2d885e57a3426b99e5a4a90b0de

Download Submit
C:\Users\Admin\AppData\Local\Temp\keygen.exe

Filesize
108KB

MD5
dba6fbc5a2c420c7d5ae4bdaf2d0b60c

SHA1
f818492cb0d80b229eecb793ff88f626e5b7641d

SHA256
6f3c761b8d91fdebb51a07019b00f7bd4072483e47fa7e819e6513480f6a168e

SHA512
2675185222a45e892853e25ad5d8cfb79195808013d9d66371ca295ef06b9c63dcbbe6f94eb143f67b68b0fc7ad3622ad3551a9d9023fab6179b24dcda6709fb

Download Submit
memory/2228-0-0x000007FEF5A5E000-0x000007FEF5A5F000-memory.dmp

Filesize
4KB

Download
memory/2228-2-0x000007FEF57A0000-0x000007FEF613D000-memory.dmp

Filesize
9.6MB

Download
memory/2228-18-0x000007FEF57A0000-0x000007FEF613D000-memory.dmp

Filesize
9.6MB

Download
memory/2828-19-0x000007FEF57A0000-0x000007FEF613D000-memory.dmp

Filesize
9.6MB

Download
memory/2828-20-0x0000000000BE0000-0x0000000000BF4000-memory.dmp

Filesize
80KB

Download
memory/2828-21-0x000007FEF57A0000-0x000007FEF613D000-memory.dmp

Filesize
9.6MB

Download
memory/2828-22-0x0000000000420000-0x0000000000438000-memory.dmp

Filesize
96KB

Download
memory/2828-23-0x000007FEF57A0000-0x000007FEF613D000-memory.dmp

Filesize
9.6MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads